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A machine is designed to perform a given amount of work in a given amount of time. A second machine does twice the same amount of work in half the time. Find the power of the second machine.
Under an outdoor area "yellow" (Na lamp) light, a fiber is placed between but at the edger of two 3 cm glass slides. how thick is the fiber
michael hits a 45.9 g golf ball traveling 56.0 m/s at an angle 60 degree north of east and splits into three pieces. what is the velocity of the third piece
Find out separation between the two sources
A cue ball, which has a mass of 0.17 kg, collides head on with a stationary 8 ball, what was the speed of the cue ball before and after collision
Two disks have equal masses, m, and radii, R. Their moments of inertia are each .5mR^2. find the acceleration of the center of mass of the lower disk
what is the electric potential energy of this particle. what is its speed just before it strikes the positive plate.
The merry-go-round is moving at a speed of 0.3 rev/sec when it shuts down. find the initial angular velocity of the merry-go-round
Mattwe pulls his little sister sarah in a sled on an icy surface, with a force of 60 N at an angle of 37 ° upward from the horizontal. If he pulls her a distance of 12m, then determine the work done by matthew?
A hotel elevator ascends 140 {rm m} with a maximum speed of 4.59 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.93 {rm m/s^2}. How long does it take to make complete trip from bottom to top.
An engine absorbs 1.69 kJ from a hot reservoir at 277 °C and expels 1.24 kJ to a cold reservoir at 27 °C in each cycle. What is the power output of the engine if each cycle lasts 0.298 s
A photon with a wavelength 4.40 scatters from an electron initially at rest. Find out the wavelength of the scattered photon when the scattered electron has its utmost kinetic energy. Kmax = 2.37*20^-14.
The skis have a thrust of 200. Sam's speed at the bottom is 43.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
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